function mefibs_block_machine_name_exists in MEFIBS - More exposed forms in blocks 7

Same name and namespace in other branches

1. 8 mefibs.module \mefibs_block_machine_name_exists()

Callback function for a blocks machine_name form element.

Parameters

string $value:

Return value

boolean

1 string reference to 'mefibs_block_machine_name_exists'

mefibs_display_extender_plugin_blocks::options_form in ./mefibs_display_extender_plugin_blocks.inc

Provide a form to edit options for this plugin.

File

./mefibs.module, line 1161

Primarily Drupal hooks and global API functions to manipulate views and to provide an additional block with an exposed filter form.

Code

function mefibs_block_machine_name_exists($value, $element, $form_state) {

  // Check which button has triggered the submit. We need to verify uniqueness
  // of the given value only when a new block should be added.
  $button = $form_state['triggering_element'];
  if (!isset($button['#group'])) {
    return FALSE;
  }
  if ($button['#group'] !== 'add') {
    return FALSE;
  }

  // Prevent usage of "default".
  if ($value == 'default') {
    return TRUE;
  }
  if (property_exists($form_state['view'], 'form_cache')) {
    $blocks = $form_state['view']->form_cache['blocks'];
    foreach ($blocks as $block) {
      if ($block['machine_name'] == $value) {
        return TRUE;
      }
    }
  }
  return FALSE;
}